Metabotropic Glutamate Receptor in complex with antagonist (1~{S},2~{R},3~{S},4~{S},5~{R},6~{R})-2-azanyl-3-[[3,4-bis(fluoranyl)phenyl]sulfanylmethyl]-4-oxidanyl-bicyclo[3.1.0]hexane-2,6-dicarboxylic acid

Experimental Data Snapshot

  • Resolution: 2.80 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.210 

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This is version 1.2 of the entry. See complete history


Discovery of (1S,2R,3S,4S,5R,6R)-2-Amino-3-[(3,4-difluorophenyl)sulfanylmethyl]-4-hydroxy-bicyclo[3.1.0]hexane-2,6-dicarboxylic Acid Hydrochloride (LY3020371HCl): A Potent, Metabotropic Glutamate 2/3 Receptor Antagonist with Antidepressant-Like Activity.

Chappell, M.D.Li, R.Smith, S.C.Dressman, B.A.Tromiczak, E.G.Tripp, A.E.Blanco, M.J.Vetman, T.Quimby, S.J.Matt, J.Britton, T.C.Fivush, A.M.Schkeryantz, J.M.Mayhugh, D.Erickson, J.A.Bures, M.G.Jaramillo, C.Carpintero, M.Diego, J.E.Barberis, M.Garcia-Cerrada, S.Soriano, J.F.Antonysamy, S.Atwell, S.MacEwan, I.Condon, B.Sougias, C.Wang, J.Zhang, A.Conners, K.Groshong, C.Wasserman, S.R.Koss, J.W.Witkin, J.M.Li, X.Overshiner, C.Wafford, K.A.Seidel, W.Wang, X.S.Heinz, B.A.Swanson, S.Catlow, J.T.Bedwell, D.W.Monn, J.A.Mitch, C.H.Ornstein, P.L.

(2016) J Med Chem 59: 10974-10993

  • DOI: https://doi.org/10.1021/acs.jmedchem.6b01119
  • Primary Citation of Related Structures:  
    5KZN, 5KZQ

  • PubMed Abstract: 

    As part of our ongoing efforts to identify novel ligands for the metabotropic glutamate 2 and 3 (mGlu 2/3 ) receptors, we have incorporated substitution at the C3 and C4 positions of the (1S,2R,5R,6R)-2-amino-bicyclo[3.1.0]hexane-2,6-dicarboxylic acid scaffold to generate mGlu 2/3 antagonists. Exploration of this structure-activity relationship (SAR) led to the identification of (1S,2R,3S,4S,5R,6R)-2-amino-3-[(3,4-difluorophenyl)sulfanylmethyl]-4-hydroxy-bicyclo[3.1.0]hexane-2,6-dicarboxylic acid hydrochloride (LY3020371·HCl, 19f), a potent, selective, and maximally efficacious mGlu 2/3 antagonist. Further characterization of compound 19f binding to the human metabotropic 2 glutamate (hmGlu 2 ) site was established by cocrystallization of this molecule with the amino terminal domain (ATD) of the hmGlu 2 receptor protein. The resulting cocrystal structure revealed the specific ligand-protein interactions, which likely explain the high affinity of 19f for this site and support its functional mGlu 2 antagonist pharmacology. Further characterization of 19f in vivo demonstrated an antidepressant-like signature in the mouse forced-swim test (mFST) assay when brain levels of this compound exceeded the cellular mGlu 2 IC 50 value.

  • Organizational Affiliation

    Neuroscience Research, Eli Lilly and Company , Erl Wood Manor, Sunninghill Road, Windlesham, Surrey, U.K. GU20 6PH.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Metabotropic glutamate receptor 2570Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q14416 (Homo sapiens)
Explore Q14416 
Go to UniProtKB:  Q14416
PHAROS:  Q14416
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ14416
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on 6YS

Download Ideal Coordinates CCD File 
B [auth A](1~{S},2~{R},3~{S},4~{S},5~{R},6~{R})-2-azanyl-3-[[3,4-bis(fluoranyl)phenyl]sulfanylmethyl]-4-oxidanyl-bicyclo[3.1.0]hexane-2,6-dicarboxylic acid
C15 H15 F2 N O5 S
Query on NAG

Download Ideal Coordinates CCD File 
C [auth A]2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
Experimental Data & Validation

Experimental Data

  • Resolution: 2.80 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.210 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 166.297α = 90
b = 166.297β = 90
c = 79.776γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
PDB_EXTRACTdata extraction
d*TREKdata reduction

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2016-12-28
    Type: Initial release
  • Version 1.1: 2017-01-04
    Changes: Database references
  • Version 1.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary